How can I do arithmetics with Char objects?

General Usage
9

Yep, you had a point. The logics are wrong, but the issue is conversion. I was fixing the code just right now and I get it working.

  1. Subtracting c-‘a’ I was dealing with an index, but i had a dictionary and the char is just what I need
  2. Map the result dividing all values by the num_count, to get the frequency.

Thank you all guys, for help

function generate_frequencies(data::String)

    data = replace(strip(lowercase(data)), "\n" => "")

    num_count = 0

    frequencies = Dict{Char, Int64}()

    for c in data

        if c >= 'a' && c <= 'z'

            if haskey(frequencies, c)

                frequencies[c] += 1

                num_count += 1

            else

                frequencies[c] = 0

            end

        end

    end

    map!(x -> floor(x / num_count), values(frequencies))

    frequencies

end